‘The tragic events of last Sunday have left Hani’s mother and wider family completely devastated,’ he said.

‘Hani’s mother has lost her only child and is still coming to terms with the heartbreaking events that have led to the death of her son.

‘I am directly appealing to the parents and carers of those believed to be involved – if you have slightest indication that your child may have been involved in this incident I encourage you to get them to hand themselves in to the police. Failing to do so will result in my officers pursuing them until we have caught all those responsible.’

Hani’s mother Pauline Hickey left a note with flowers at the scene with the words: ‘My baby. My heart is broken. I love you so much, the pain is unbearable. Your loving mother.’

Family members also signed a copy of a note written by Hani to his mother, alongside a picture of him as a child, reading: ‘Thank you for being the best mum. Love to mummy, thank you for everything. Love from Hani.’